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x = 2&#x8868;&#x793A;&#x7B2C;&#x4E8C;&#x5217;&#xFF0C;z = 1 &#x8868;&#x793A;&#x5728;&#x7B2C;&#x4E00;&#x6392;&#xFF0C;y&#x503C;&quot;neg_pos&quot; &#x8868;&#x793A;&#x4E00;&#x79CD;&#x5BF9;&#x9F50;&#x65B9;&#x5F0F;&#xFF0C;&#x8868;&#x793A;&#x673A;&#x67DC;&#x7684;&#x6700;&#x4E0B;&#x9762;&#x548C;&#x673A;&#x623F;&#x6A21;&#x578B;&#x7684;&#x6700;&#x4E0A;&#x9762;&#x5BF9;&#x9F50;&#x3002;
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</ol>
<pre><code>       __________
 _____|          |
|     |          |
|     |          |
|_____|__________|
</code></pre><h3 id="&#x7A7A;&#x95F4;&#x89C4;&#x5219;">&#x7A7A;&#x95F4;&#x89C4;&#x5219;</h3>
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<p>&#x7A7A;&#x95F4;&#x89C4;&#x5212;&#x76F8;&#x5173;&#x7684;&#x4E24;&#x4E2A;&#x5C5E;&#x6027;&#xFF1A;size&#x548C;childrenSize&#x3002;</p>
<p>size&#xFF1A;&#x8868;&#x793A;&#x81EA;&#x8EAB;&#x6240;&#x5360;&#x7684;&#x4F4D;&#x7F6E;&#xFF0C;&#x5C5E;&#x6027;&#x5305;&#x62EC;x&#x3001;y&#x3001;z&#xFF0C;&#x5206;&#x522B;&#x8868;&#x793A;&#x4E09;&#x4E2A;&#x65B9;&#x5411;&#x7684;&#x5C3A;&#x5BF8;&#x3002;&#x4F8B;&#x5982;2U&#x7684;&#x670D;&#x52A1;&#x5668;&#xFF0C;&#x9700;&#x8981;&#x5360;&#x7528;2&#x4E2A;1U&#x7684;&#x9AD8;&#x5EA6;&#x3002;&#x90A3;&#x4E48;&#x503C;&#x4E3A;&#xFF1A;&#xFF5B;y&#xFF1A;2&#xFF5D;
&#x4F8B;&#x5982;</p>
<pre><code>var size = {&#x201C;x&#x201D;: 1,&#x201D;z&#x201D; : 1};
</code></pre><p>childrenSize&#xFF1A;&#x5C5E;&#x6027;&#x5305;&#x62EC;&#xFF1A;x&#x3001;y&#x3001;z&#x3001;xPadding&#x3001;yPadding&#x3001;zPadding&#x3002;&#x5176;&#x4E2D;x&#x3001;y&#x548C;z&#x8868;&#x793A;&#x5176;&#x4E2D;x&#x3001;y&#x548C;z&#x8868;&#x793A;&#x53EF;&#x4EE5;&#x5BB9;&#x7EB3;&#x5B50;&#x5BF9;&#x8C61;&#x7684;&#x6570;&#x91CF;&#xFF0C;xPadding&#x3001;yPadding&#x548C;zPadding&#x7684;&#x503C;&#x662F;&#x4E00;&#x4E2A;&#x4E8C;&#x7EF4;&#x6570;&#x7EC4;&#xFF0C;&#x9ED8;&#x8BA4;&#x662F;&#xFF3B;0&#xFF0C;0&#xFF3D;&#xFF0C;&#x8868;&#x793A;&#x4E09;&#x4E2A;&#x65B9;&#x5411;&#x76F8;&#x9700;&#x8981;&#x6263;&#x9664;&#x7684;&#x95F4;&#x9699;&#x3002;&#x4F8B;&#x5982;42U&#x7684;&#x673A;&#x67DC;&#xFF0C;&#x6709;42&#x4E2A;U&#x7684;&#x9AD8;&#x5EA6;&#xFF0C;&#x5982;&#x679C;&#x88C5;1U&#x7684;&#x8BBE;&#x5907;&#x53EF;&#x4EE5;&#x5BB9;&#x7EB3;42&#x4E2A;&#xFF0C;&#x5982;&#x679C;&#x88C5;2U&#x7684;&#x8BBE;&#x5907;&#x5219;&#x53EA;&#x80FD;&#x5BB9;&#x7EB3;21&#x4E2A;&#x3002;&#x90A3;&#x4E48;&#x503C;&#x4E3A;&#xFF1A;&#xFF5B;y&#xFF1A;42&#xFF5D;</p>
<pre><code>var childrenSize={
    y:42,
    yPadding:[5.545,5.545],
    zPadding:[-0.5,-0.5],
    xPadding:[5.545,5.545]
};
</code></pre><p>&#x7A7A;&#x95F4;&#x89C4;&#x5212;&#x5728;&#x8BA1;&#x7B97;&#x7A7A;&#x95F4;&#x5229;&#x7528;&#x7387;&#x7B49;&#x6307;&#x6807;&#x65F6;&#xFF0C;&#x4F1A;&#x6839;&#x636E;size&#x548C;childrenSize&#x6765;&#x8BA1;&#x7B97;&#x5269;&#x4F59;&#x7A7A;&#x95F4;&#x548C;&#x5DF2;&#x7ECF;&#x4F7F;&#x7528;&#x7684;&#x7A7A;&#x95F4;&#x3002;</p>

                                
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